END POSITION SIGNALING UNIT Russian patent published in 2023 - IPC F16K37/00 

FIELD: pipeline valves.

SUBSTANCE: used to signal the position of moving elements of fittings and mechanisms. The end position signaling unit, consisting of a housing containing microswitches, two inertial compensators, an electrical and mechanical indicators of the end positions of the shut-off element, a bushing, two adjusting fasteners, equipped with a protective casing. The housing of the alarm unit contains a movable carriage with the ability to move in the housing along its axis. The alarm unit has a bracket consisting of two plates, between which the housing is located, parallel to the longitudinal axis of the housing and connected to a structural element rigidly fixed to the shut-off element of the pipeline fittings using a key clamped on the other side between adjusting bolts with right-hand threads inserted into longitudinal hole of the bracket. On one of the adjusting bolts there is a bushing with a left-hand thread. Microswitches are installed in the housing on the same plane in pairs close to each other and secured to the base of the housing. In this case, the contact pins of the microswitches are directed in one direction, and the buttons of the contact sensors of paired microswitches are directed in directions opposite to each other. One of the bracket plates, shaped like an arrow, serves as a mechanical indicator of the position of the shut-off valve. The technical solution uses 2RMT connectors as an electrical indicator of the end positions of the shut-off valve.

EFFECT: increasing the reliability of a signaling unit for the end positions of a shut-off valve of pipeline fittings of any diameter while simultaneously reducing overall characteristics and improving accessibility for installation of a cable entry.

1 cl, 2 dwg